State the law of conservation of electricc1ag-wti-, c rjvra60 charge.

  Is it possible for two negative chargesd tx /s9a4tp4f nlgc.7 to attract each other?

  Is it possible for a positn hmb.f*2g ou0*:c qjvive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process t22 srndsf1n+k /m8tzjhe-gfuhvimr/ kv/8 68 he glass rod acquires a p2/ j2fumr8ih8k1 8df/h+6/e ssgv krtvmn- znositive charge and the silk

  A proton carries a

  The model of the atom4phy ee*7 of 8qs69 s,7dditvo shows a

  A neutral atom always k/d)+* cy xqkoow ),ithas

  An atom has more eleigtygwv8 r a5j 3v94+vctrons than protons. The atom is

  Materials in which the electrons are bound very tightly to the g zzw xo:u;t;+nuclei are referred tox z+zo;uw: gt; as

  Materials in which the electrons are bound very loosely to thg) gpy s(mtj9/e nuclei and can move about freely within the material are refegpg)t( j9m /ysrred to as

  A negatively charged rod is brought near one end of an uncharged metal bar. Thec 7+o2swai)1oll)uyltx 1ad2 end of the metal bar faro il1 slu x1)7t)ya2dcaol +w2thest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphery; s j 9q/b1ja1pyufm7n nu6j8/fhsn-e B is neutral. They are placed near each other6nf8ujnu;sy1h a 7j9/sq/ bfpjmn-1y on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively chargedf4 f;ubda. i0eiak+ (i rod charge an electroscope positively?

  An originally neutral electroscope is briefly toufwpo8exizidr6-b) 3- iji:u .ched with a positively charged glass rz ie-iiu f68.:)bi3 -rxpojdwod. The electroscope

  An originally neutral elect7lv 6txk -fbbr6 4hl:jroscope is grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, thet4-hlvlb j :7kxr6b f6 electroscope

  A positive object touches a neutral electroscopetuq.mjgi7gs 04 ( rt)u, and the leaves separate. Then a negative object is brougtsmu.(uj 4ti)g gr0 7qht near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object s*p1y hhflwix5g d;o:v 920rc is placed on an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball rolls along the path followed by the first ball, strikes the first ball, and stops. The first ball rolls forward, but does not touch the negative object. At no time does either ball touch the negative object. What is the final charge on each ball?lf*rp:iy9s vw 02 och;1gxh5d

  Charge is

  What are the units of the Crlf y3,lj4n b m*nh7-moulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distanczudlek/e34 3se d. The first charge is larger in magnitude than the sec3e34ul de/s zkond charge.

  Sphere A carries a net charge and sphere B j:7xrd/c z8ojis neutral. They are placed near each other on an insulated table j8:o/dr z7cjx. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other w ss4(1;*rrkuy )yghozonlu-:4e 7q4e: gx hgqith a certain force. If the charges on both objects are doubled with no change in separation: s7hqu*sgyonl:y 4hxr;r)u4 qg gze (o-1 4ek, the force between them

  Two charges are separated by a distance d and exert mu n tmo(nxq:/ ew;0zm6ntual attractive forces of F on each other. If the charges are separated by xmm(:nn 0won/tq6e; z a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a forcekcr2qu ar s(;8 F. What happens to the force between them if one charge is doubl2a c(rk8su;rq ed, the other charge is tripled, and the separation distance between their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proto2i5ij+qwg(:p o2 plresw1 )ron are separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the first electr5jir:es 2i2o +wwq olpp)g(1ron?

  An electron and a proton are n,m3ljgh6yp* /5s b;+llztflseparated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electrlfzp 3+ymbs*lhllng,5/;j6 t on is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What hag,g-hm+7 l (8v ajcvqkppens to the size of the force ohm+v-q ,kgjg(acvl7 8n the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at tjho cgo kdw6z((x:-c 5he center of a square. When a second point charge of -Q is placed at one of the square's corners, it is observed that an electrostatic force of 2.0 N acts on the positive charge at the square's center. Now, identicjowd(6cokx( c g-h:5zal charges of -Q are placed at the other three corners of the square. What is the magnitude of the net electrostatic force acting on the positive charge at the center of the square?

  A point charge of +Q is placed at the centroid of an eqp a.mm r3/d8nvuilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic force of 4.0 N acts on it. What is the magnitude of the force that acts on the c 8v a3/mmn.dprenter charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is not a vector?hl3kv3 7+a ls wxbq0m5

  At twice the distance from a point charge, the strei +joi2ioi )t k3ut01lngth of the electric field

  Is it possible to have a zero electric field value between a n m)- 6u,cxzqewegative and positive chargeu)zxwqc ,m- 6e along the line joining the two charges?

  Is it possible to have a zero electrid f,wlhfowgwl)6j3xju /vu z1( 8m2-k ;hhv,a c field value between two positive charges along the line joining t lhwx/wo6vf(k32)vlhaw mu 1g,d-zjuf8,;hjhe two charges?

  Electric field lines det b.9y0n;g/ o/skyd,wbu :inear psitive point charges

  The electric field show*uep 46upg tc9n

  Can electric field lines intersew 8nz,qso-bx (crc2imw5 2ff .ct in free space?

  A solid block of metal in electrostatic equilibrium is placem kadv-:d2 g9bd in a uniform electric field9d:gbv -2mkda . Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal d5z24p8dqoq/ztrz tnik q)b -(iameters are each given the same charge, the electric field (Eq/oqz t82pkq)d-b (i4tnrz5z ) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden tab8 0 a.n-z2aw(vbs lldmw8bs:v le in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on ths:db2 0(l 8.vwasmbnv8-a zw le block's top surface?

  If a conductor is in electrostatic equilibrium neawc,3gpyt )ea c56vy/ar an electric charge

  A positive point charge is enclosed in a hollow metallic sphere thaj/jonh 9s-hwqz y34nex :24oj0/g rdz t is grounded. As compared to the case without t xgo n24ehy3zn-r9:d4wqj//jz0 h sjohe hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in stat)aq w 1i0ki.c mkf,lh1ic equilibrium.

State Gauss's law.

  The charge carried by onezf6 cnefyek)gp74 .+awx: dh 0 electron is $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a net charge of +2.00 mCv(g z ,3xigfo). How many more protons than electrons does this piece of plastic h3fg o(xv,)zig ave?

  What is the charge on 1 kg of protons?dv73; ,b nblib

  An atomic nucleus has a charge y vgplz.e5qwm f:y :1cw9k56zof $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.5 cm, have charge values of 2.0 and -4.0 f2uk.0uvm+:obqo -y pmC, respectively. What is the magnitude of the electric force between them?0.ovpm b2 yqk fu:ou+-

  A 1.0-C charge is 15 m from a second charge, gh43 h7: f xqeezff+1+hdiny+g q2 pwu)a0;dl and the force between them is 1.0 N. What is the magn)fe4q 7ef1pnd3l;izh q dw+ha+fg 2: y0gxh+uitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are they r0mps3ga7 vd6?

  The force between a xwjypjg r8(0 :$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience a 1.3pk drde 16qf:0-N force. If they are moved to a new sepadp q1 6dr3f:ekration of 8.0 cm, what is the electric force between them?

  Three identical pointb)aq pfxuoidwca 3uz+3 t8k )7u9b4 2b charges of 2.0 mC are placed on the x-axis. The first charge is at the origin, the second to the right at x = 50 cm, and the third is at the 100 cm mark. What are the magnitude and direction of the electrostatic force which b opd +9 8i4wu uuacqzk7))3t2a3bfbxacts on the charge at the origin?

  Three point charges are placed on the x-axis. A yyv*r us5*( ltn 6.zezcharge of +2.0 mC is placed at the origin, -2.0 m C to the right at x = 50 cm, and +4.0 mC .zt5 *l u6vnzsy(r*ey at the 100 cm mark. What are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following posp:;u0(ih4qndzp0 yc vitions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is the magnitude of the force ;0:upv4z0i h( dpncyqon the 3.00-mC charge?

  A point charge of +Q is placed at the ce*x ,v *u2ctooq +n yu8)lrpb*vnter of a square, and a second point charge o qr **oup8u,nxbc+)y2l*ov vtf -Q is placed at the upper-left corner. It is observed that an electrostatic force of 2.0 N acts on the positive charge at the center. What is the magnitude of the force that acts on the center charge if a third charge of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is aojj64gq( xsmxrbdq1- 2p7ia1t (0, 0). What is the magnitude of the net force on the 5.0 nC charge 1xs mxjqo26 a-qjr1 pidg47(b?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m)ehyk y9w4/k.l; Q3 = 5.0 nC is at (0, 0). What is the direction of the net 94/l khewyky. force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equil orox ,af:xzfs)0 y1+5y.rlruateral triangle which measures 30 cm on a side. What is the magnitude of the electro1a5ry xf.yf :,x0)r+ oruolzsstatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At what poi.is.vdxop 3buh ) .up3nt, .pub 3vi).os.hdu3 px on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and zs 015ghk.et7 kxrg*v/s;mv ma +9.0-C charge is at x = 4.0 m. Where on the x-axis can a sm5xkv gk7 /h.esmt zr*1gv0; third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and chary, bkf/ g1 g zhr)ur4+myek.4yge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the for/e.)yr4bug1f zk gmhkr4, +yyce on it is zero?

  A copper penny has a mass .wbmgt)5 67l;lfti h2 dtf px+l.iso 7of 3.0 g. A total of $4.0 \times 10^{12} \; electrons$ are transferred from one neutral penny to another. If the electrostatic force of attraction between the pennies is equal to the weight of a penny, what is the separation between them?

  An electron is held de-ekmw , 3inj0c-nr 2up against the force of gravity by the attraction of a fixed pre r,ewcji-23 kn0 nm-doton some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres ak;3h h yomqulp++vuwa1,m0)rre hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and t oraw+mu 0 3vkmp, 1h)y+;hqulhe electrostatic repulsion forces them apart until the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is the magnitudh2j/zyu ullm6e.x b 1/e of the electric field at a distance of 1.0 u . mlb zeuh1j/6/l2yxm from the nucleus?

  What are the magnitude and direction of ierzq 51e3naq p*d3(pthe electric field at a distance of 1.50 m from a 50.0 r35eei n3(*qa p1qdzp-nC charge?

  A 5.0-C charge is 10 m from a smalstaot y(olp h5n 935//-znx-2evakwcl test charge. What is the magnitude of the electric field at the location of th/3-xwaslk55p2 9ah n en/-vozt tyco(e test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of the erkxt2ux2s +7zem.f f-m j9k 9b th/xs3lectrb muxx2mttxz3j2 fs h+r. 9ek-7f9/s kic field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnit)jx;levv b-*yw k.6s wude of the force experienced by a 1.0 nC chae*kx bvlw6 -yj.;) vwsrge placed at the location of the test charge?

  Two point charges each have a value of 3.0fgzi.qdgrv3 -x o3-mw64en 9 z C and are separated by a distance of 4.0 m. What is the electric field at a point midway between the two chargesgqwf9o46xme v-ig d-3.rz3zn ?

  A 5.0-mC charge is placed at the 0 cm mark of a meter s3* sh(.kgkul xtick and a -4.0 mC charge is placed at the 50 cm mark. What lkxs* gu k3h(.is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.sh qyvlztf; :pft+-(d b.3m qy9c-s9h0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is thdhss.9hvp + tfl c9: -tybq-(myzf q3;e electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 mv k/4-d0r* kh5zycqwr. What is the magq/hr-0 yk5zd c*vk4w rnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. Thrgv h);uu3 bxkzg 7pg6;92rh e cw/x*re last corner is occupied by a -3.0 mC charge. Find the electric field at the center of g;r3* ugbr/wxeh)kzvh9 x2g6 rc 7pu;the square.

  Consider a square which is 1.0 m on a 4qhj 5qyoxn zcq9574wside. Charges are placed at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); +3.0 mC at (ho9 y q4qx5cjnz5wq 471, 0); -3.0 mC at (0, 1). What is the magnitude of the electric field at the square's center?

  A force of 10 N acts on a charge of 5.0 i2u.ilk itngt+ ::h3u mC when it is placed in a uniform electric field. What is the magnitude of this 3knhu itit2+gli:u .:electric field?

  A particle with a charge of 4.0 mC has a mas;ky9ftr6 kf g:c4 cqo4 :*ht/ aziohj1s of $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of mass 0.120 g is placed6csdjix 7n + .(ph.gwa6zy tl6 in an electric field of 6000 N/C pointing downward. What charge mus.i7xynp6j (l6 .hs 6zcdgt a+wt be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. zo;-cp r(6lart9hs )hThe ball is placed inside a uniform 9h a6h(tr -p; zoclrs)electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carriesy;1o7//sj l xox irfy* a charge of +2.0 mC. What is the magnitude of the electric field 5.0 i /yxjx 1 lorfo*;7s/ycm from the sphere's surface?

  A metal sphere of radius 2.0 cmmc(g fk 4 m5ukg +;o* 4qq8axvw0qwyll7)+xef carries a charge of 3.0 mC. What is the electric fiemxfmqx)e q g (g7+uv y8w;w40l5 klqk*f+a c4old 6.0 cm from the center of the sphere?